X-ray shielding device



April 19, 1932. s. LAPoF X-RAY SHIELDING DEVICE Filed March ll, 1931Patented pr. 19, 1932 UNITED STATES ATENT OFFICE SAMUEL LAPOF, OF NEWYORK, N. Y., ASSIGNOR TO BAR-RAY PRODUCTS, INC., OF NEW YORK, N. Y., ACORPORATION X-RAY SHELDING DEWCE Application filed March 11, 1931.Serial No. 521,747.

This invention relates to X-ray shielding devices, and more particularlyto means for preventing the passage of X-rays through doors, partitions,panels, etc., made of wood,

6 and other materials.

It is well known that lead is impervious to X-rays, and heretofore, ithas been the practice to shield doors, panels, and the lilre, bycovering such articles with sheets of lead.

10 However, such a method of shielding has been objectionable in thatthe lead sheet is secured to the wood or other material by means ofcommon wire nails or screws, which are made from metals which are notimpervious to the X-rays, with the result that there are numerousapertures in the lead sheet through which the X-rays may freely pass.

It is, therefore, an object of this invention to provide a door, panelor the like, made from wood or other materials, which is provided withmeans to render it absolutely impervious to X-rays.

A further object is the provision of a method of attaching a lead sheetto a panel of fibrous material or the like or other material so thatthere will be no areas through which X-rays may pass.

These and other objects are attained by the novel construction andcombination of parts hereinafter described and illustrated in theaccompanying drawing, forming an essential part of this disclosure, andin which the figure is a perspective view in section of a corner of adevice embodying the invention.

Referring to the drawing, the ligure shows a corner of a device which ismade from several layers of material such as wood or other suitablematerials. As shown, the structure comprises two boards or panels l, ofwood or other suitable material, separated by a sheet 2, of lead. HolesareV bored through the boards and lead sheet and countersunk, afterwhich the holes are lled with lead plugs 3.

As will be clearly seen, the flanges at the ends of the plugs, due tothe countersunk portions of the holes, presents a. complete lead shield,even vthough .there may be minute spa-ces at the juncture of the plugsand the lead sheet. At the same time the flange heads on the plugs havea riveting action to firmly bind the boards 1 and the lead sheet 2together.

rlChe outer surfaces of the boards or panels l and the plugs 3 may bethen concealed by a 55 veneer Il, and the edges of the panels finishedby 1strips 5 of wood or other suitable materia From the abovedescription it will be seen that there has been provided a simple and 6oei'l'ective device for preventing the passage of X-rays. The structuredescribed may be used for doors, panels, etc., and in any situationwhere it is necessary to prevent the passage of X-rays through articlesmade of wood, or other materials.

lWhile boards or panels, l, have been described as being made of wood orsimilar materials, it is understood that such boards or panels may bemade of various metals such as steel, copper, etc.; or the boards orpanels may be made of any suitable material, without departing from thespirit of the invention.

The foregoing disclosure is to be regarded as descriptive andillustrative only, and not as restrictive or limitative of theinvention, of which embodiments may be constructed includingmodifications without departing from the general scope herein indicatedand denoted in the appended claims.

Having thus described the invention, what is claimed as new and desiredto protect by Letters Patent, is

1. A device for preventing the passage of X-rays, comprising two boardsof fibrous ma-V terial, a sheet of lead positioned between the boards,said boards and sheet having holes bored through them, the ends of theholes being countersunlr, and integral lead plugs completely filling theholes.

2. A device for preventing the passage of X-rays, comprising two panels,a sheet of lead positioned between the panels, said panels and sheethaving communicating 95 holes, and integral lead plugs completely llingthe holes, the plugs having enlarged heads of greater diameter than theholes.

3. A device for preventing the passage of X-rays, comprising a panel, asheet of ma- 100 terial impervious to X-rays mounted on the panel, saidpanel and sheet having communi eating holes, and integral plugs ofmaterial impervious to X-rays llinof the holes, said 5 plugs havingenlarged heads of greater diameter than the holes.

Signed at New York city, in the county of New York and State of NewYork, this 26th day of February, A. D. 1930,. Y SAMUEL LAPOF.

CFL

